| Abbreviation | Definition |
|---|---|
| DIFM | Due In For Maintanence |
| DIG | Dig In Gladly |
| DIG | DIGital |
| DIGI-DOPS | Digital Doppler System |
| DIGISMAC | Digital Scene Matching Area Correlator |
| DIGO | Defence Imagery and Geospatial Organisation |
| DIGS | Digital (or Delta) Inertial Guidance System |
| DII | Defense Information Infrastructure |
| DII-COE | Defense Information Infrastructure - Common Operating Environment |
| DIILS | Defense Institute of International Legal Studies |
| DIIP | Defense Inactive Item Program |
| DIJE | Defense Intelligence Joint Environment |
| DIL | Digital Integration Laboratory |
| DIL | Digitization Integration Laboratory |
| DIL | DIS Interface Library |
| DILAG | Differential Laser Gyro |
| DILLIGAS | Do I Look Like I Give A S*** |
| DILPA | DIphase Loop Modem - A |
| DIM | Data Input Message |
| DIMA | Drilling Individual Mobilization Augmentee |